<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>求字符串数组中每一项的长度</title>
    <script>
        var array = new Array('22222', 'a', '', 'aaaaa')
        var newArray = new Array(array.length)
        for (var i = 0; i < array.length; i++) {
            newArray[i] = array[i].length
        }
        console.log(newArray)
    </script>
</head>

<body>

</body>

</html>